Ship construction



L. J. HAGEN.

SHIP CONSTRUCTION- APPLlCATlON FILED APR. 8'. I919.

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L J HAGE N SHIP CONSTRUCTION.

APPL'ICATION FILED APR. 8, l9l9- LABS J. HAGEN, or ronriiann, 01mm. r

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Specification of Letters Patent. Patented Sept, 21,1920,

Application filed April 8, 1919. Serial N0. 288,537.

T 0 all whom z't may concern:

Be it known that I, LARS J. HAGEN, a CltlZGIl of the United States,residing at-Portland, in the county of Multnomah and State of Oregon,have invented a new and useful 1m.- provement in Ship Construction ofwhich the following is a specification, reference beingqhad to theaccompanying drawings.

1 y invention relates to a reinforced construction for wooden ships. 7

The object of my invention'is to provide a metal reinforcing meansthroughout a wooden ship whereby the buoyancy of wood and the strengthof metal may be obtained in a composite ship. Theseobjects, as well asothers, I attain by the construction, combination and arrangement ofparts illustrated in the accompanying drawings which form a part hereof.

Figure 1 is a side elevation of the general type of a vessel in whichthe construction herein described is embodied for illustration. 7 r Fig.2 is a'side elevation of a part of the vessel wall with parts brokenaway, on the line 22 of Fig. 1. 1

Fig. 3 i a transverse section of a wall, part of bottom, and someadjacent parts,

for example on a line such as 3 '3 in Fig. 1.

Fig. 4: is a transverse sectional view of a central part of the vesselshowing also shaft tunnel and keel.

Fig. 5 is a horizontal section of the stern and stern post.

Fig.6 is a horizontal section of the stem on the line 66 in Fig. 1.

Fig. 7 is a detail longitudinal sectional view of the construction ofwall and frames on the line 7-7 of Fig. 8.

Like numbers refer to like parts in all figures.

Wooden walls 8, with railings 8', and bottom 9, of common type areprovided, on the lines of a vessel as shown in Fig. 1. metal keel 10extends from stem to stern and also extends within the hull a desiredheight. Garboard plates 11 are placed longitudinally along the keel oneach side, making the garboard strake. They are rigidly secured to thekeel by rivets 11'.

The frames of the vessel are arranged in series and the elements thereofwill nowrbe described. A member 12 at the bottom is a vertical plate ofdesired width, having a flange 13 along its upper edge and a passageopening 14 therein. One .end of the member 12 engages the keel plate 10and the member extends therefrom to the lower part of the wall 8,decreasing'in width. An angle iron 15 is secured atone side to the keel10 and also to the member 12 near its end by an angle plate 16. Theangle ironl5 QX- tends along thelower part of the member 12 a desireddistance and is also secured along oneside to the garboard' plate 11 andthe bottom 9 by bolts 17. Near itsopposite end it is secured tothememberfl2. Alongthe upper part of the member 12, opposite its flange 13,an angle iron 18 extends from the keel lO and is secured to it inconvenient manner. A false bottom 19 is secured upon the member 12 bybolts20; A bilge ceiling 21 is secured upon the false b0aom1-9.- Themember 12 extends to aframe member-.22 which in turnextends upwardlyalong the wall 8 and railing 8 to the height ofthe latter. The bulbangle member 22 is secured near'its lower end tothe member 12 by anangleplate 23. A bilgestringer 24 and the wall 8 are secured tothe'member 22 by bolts 25. The heads of the bolts 25 may becountersunkin the exterior part of the planking or wall 8 in orderto protectthebolts better and to provide a smootherouter surface of thewall. A sidestringer 26 isarranged the f wall 8 and member 22 by bolts, 27 insimilar manner and also by angle irons 28 above the bilge stringer andis secured to having bolts. A side strake 29 'issecured onthe member 22by convenient means. The

rail 8 is also secured along its side and at its upper-part to themember 22. At a desired heightv and longitudinally of the walls woodenceiling 29 is secured upon the inner surface of the walls and betweenthe frames with close joints between the ceiling and frames. Transversebeams 30 extend from the members 22 to the opposing like members ontheopposit'e side of the hull. The beams 30 are secured at each end tothe members 22 and upon' the beams a deck stringer 32 is secured. Thebeam 80 is flanged and a deck strake 31 secured between it and the deckstringer 32. -A deck 34 is secured upon the beam 30. Across the seriesof members 22 latticeddiagonal strap braces 35 are secured to the seriesof frame members 22'and adjacent tothe wall 8, A I

shaft tunnel 36 has a bottom plate .37 se cured upon the members 12. Aseries of arched angle frames 38 are secured at their lower ends to theframe members 12 and Q 7 r r I 1,353,235

I posing hull walls and the keel plate. Into the wooden stem 45 avertical stem plate 46 extends and is secured therein by bolts. Theplate 46 also extends within the prow. Angled plates 47 extend on eachside of the plate 46 and between the ends of the walls 8. The plates 47aresecured to the stem plate 46 and to the walls by bolts. Acollisionbulk-head 48 is provided in the prow and secured to theopposing frames.The frame construction on each side of the keel is similar. 1

It will now be seen that my construction provides a vertical metal keelas the foundation and from it metal frames extend in selies withlatticed securing or strengthening means. The whole, as described, formsa metal skeleton to which the wooden bottom, Walls, railing, decks andfalse bottom are secured. The Wooden'ceiling 29 along the sides betweenthe frames is also very important, as'it adds great strength to thewhole. It is intended that it should be of well-seasoned and goodquality. material.

post 41 by i The stem and stern are also reinforced as described. Icontend that this new and useful construction provides a compositevessel having the strength of all steel construction and the greateradded buoyancy of wood construction. Such construction also allows of avessel lighter in weight than one of all metal, and of some greatercarrying capacity. A vessel built according to my invention will have amost economical initial cost and expense for maintenance.

I claim I In vessel construction of the character described, thecombination therein of, single metal frames in series-and secured .toeach other, a metal keel secured to the frames, Wooden planking securedupon the'outside of the frame skeleton thus arranged, by bolts extendingthrough the frame and plank ma terials, and transverse wooden plankingstrakes secured to the inner surface of the first mentioned planking toa desired height between the said frames, the sides of the inner strakesadjacent the frames abutting closely against the frames and engagingthem with close joints, for the purposes'indicated.

' LARs J. HAGEN. Witnesses W. L. SoUDnRs, DELIA SMITHWRIGHT.

